The Zito splits, and Saturday lineup vs. Rockies

Steve Kroner again subbing for Henry Schulman for Game 2 of the series against Colorado on the shores of McCovey Cove:

Barry Zito, Saturday’s starter, has looked out of this world at AT&T Park this season: 3-0, 0.55 ERA (2 ER, 33 IP) in five starts, all of which the Giants have won. On the road, Zito has looked like he couldn’t get out anyone in the world: 0-3, 10.19 ERA (20 ER, 17-2/3 IP) in four starts, all of which the Giants have lost.

During his pregame news conference Saturday, Bruce Bochy tried to explain how Zito’s home-road splits could be so glaringly different:

“A lot of pitchers are more comfortable at home,” Bochy said. “They seemed to be more relaxed — and the players, too. You’re used to your ballpark. You’re used to your mound. But, with that said, you would like the splits to be a little bit closer than what they are. …

“We’re in May, so … hopefully the road numbers do get a little bit better, and not just with Z. I’m talking about us as a club. Our last road trip was awful, just awful.”

Yes, after that 1-5 slog, the Giants’ road record is 9-13. S.F. is 17-9 at home.

Items of interest: The Giants still haven’t decided who will take Ryan Vogelsong’s spot in the rotation in Oakland on Tuesday night. Bochy figures to make that announcement Sunday. Bochy said the team is “in a holding pattern” regarding how to proceed in regard to Santiago Casilla’s knee problem. … Pablo Sandoval is not feeling great. He did not take batting practice, but remains in the lineup. … ESPN has opted to televise the Giants’ Sunday, June 16, game at Atlanta. The game time moves from 10:35 a.m. PDT to 5:05 p.m. PDT.